Re: FLASH: Syncing Sound

[Dave Hollinden]

>If you come up with some tips or tricks please share them.

> 


Another good syncing trick for sound effects is to create at tiny sound

file that can loop many times, and then start and stop it at key frames

associated with action in the animation.


For example, in a recent cartoon I worked on a kid stepped on a scale.  The

dial spun round and round for a period of time that might vary depending on

processor speed.  Then the dial stopped and displayed the word "Normal" at

which time there needed to be a "ding" sound effect.  It was hard to sync

this precisely since the dial animation might play slow or fast.  So I made

a sound file for the dial that consisted of only one click of a ratchet

sound.  I embedded it in the same frame that the dial started to spin, and

set it to loop 100 times with a long slow fadeout over the repetitions.  In

the frame where the dial stopped I entered another keyframe set to the

ratchet sound with its sync parameter set to stop. Then in another layer I

entered a keyframe for the ding sound.  In this way the ratchet sound plays

along with the dial no matter how long the dial spins, and the ding plays

precisely when the dial stops.  Also, I got 2 seconds of sound effect for

the dial out of a 0.1 second ratchet sound file.


If this explanation doesn't do it for you, email me directly.



Dave Hollinden

Audio Engineer

Jet City Studios, Seattle

dhollindenjetcitystudios [dot] com (mailto:dhollindenjetcitystudios [dot] com)

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